HYBRID CONTROL SYSTEM EV Drive Mode Switch Circuit

DESCRIPTION

The EV mode signal is sent to the power management control ECU (HV CPU). This signal is then transmitted from the power management control ECU (HV CPU) via CAN to the combination meter assembly to illuminate the EV indicator lamp.

A003TTJE03

If any of the following conditions are not met, EV mode may not be turned on or the mode may be cancelled. (A buzzer sounds to indicate that the transition to EV mode is cancelled and a message is displayed on multi-information display.)

EV Mode Entry Condition Tester Display Specified Condition
HV battery charge level State of Charge Approximately 50% or higher
Accelerator pedal position Accelerator Degree Below approximately 30%
Engine coolant temperature Engine Coolant Temp 0°C (32°F) or higher
HV battery temperature Temp of Batt TB1 to TB6 Between 10°C to 40°C (50°F to 104°F)

Vehicle speed

(Varies depending on engine warm-up condition)

 -

Cold: 30 km/h (19 mph) or less

Warmed-up: 45 km/h (28 mph)
Defroster - OFF
Cruise control - OFF
Win Charge Control Value Below -20000W
Wout Discharge Control Value 20000W or higher
Shift lever in N - Engine is not running

INSPECTION PROCEDURE

PROCEDURE


  1. ASK ABOUT VEHICLE CONDITION


    1. Check if a buzzer sounded and a message was displayed on the multi-information display when attempting to enter EV mode.

      Result
      Result Proceed to
      No buzzer sounded and no message was displayed on multi-information display. A
      A buzzer sounded and a message was displayed on multi-information display. B

      Tech Tips

      If a buzzer sounds and a message is displayed on multi-information display, one or more of the EV mode entry conditions have not been met. Check that all of the EV mode entry conditions have been met before pressing the EV mode switch.


    B

    COMPLETED

    A

  2. READ VALUE USING INTELLIGENT TESTER (CAN BUS CHECK)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: System Select / CAN Bus Check.

      Result
      Result Proceed to
      All of the ECUs and sensors that are currently connected to the CAN communication system are displayed. A
      None of the ECUs and sensors that are currently connected to the CAN communication system are displayed, or some of them are not displayed. B

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  3. CHECK DTC OUTPUT (ALL)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Check for DTCs of all system by following the prompts on the tester screen.

      Result
      Result Proceed to
      No DTCs are output A
      DTCs are output B

    B

    GO TO DTC CHART

    A

  4. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (COMBINATION METER)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (READY).

    3. Enter the following menus: Body Electrical / Combination Meter / Active Test / Indicat. EV Mode.

    4. Perform the "Indicat. EV Mode" Active Test.

      OK
      The EV mode indicator lamp comes on or blinks.

    5. Turn the power switch off.


    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

  5. READ VALUE USING INTELLIGENT TESTER (EV REQUEST, EV SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Data List / EV request.

    4. Read the value displayed on the intelligent tester.

      Tester Display Measurement Item/Range Normal Condition
      EV request

      EV mode transition availability/

      ON or OFF

      		 In EV mode: ON
      EV Switch

      EV mode switch condition/

      ON or OFF

      		 EV switch on: ON
      Result
      Result Proceed to
      The intelligent tester display changes according to the EV mode switch operation. A
      The intelligent tester display does not change according to the EV mode switch operation. B

    5. Turn the power switch off.


    B

    CHECK COMBINATION SWITCH ASSEMBLY (EV MODE SWITCH) Click here

    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

  6. CHECK COMBINATION SWITCH ASSEMBLY (EV MODE SWITCH)


    1. Remove the combination switch assembly.

    2. A003TF2E01
      Text in Illustration
      *a

      Component without harness connected

      (Combination Switch Assembly)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E115-1 (S) - E115-3 (E) EV switch operated Below 1 Ω
      E115-1 (S) - E115-3 (E) EV switch not operated 10 kΩ or higher

    3. Install the combination switch assembly.


    NG

    REPLACE COMBINATION SWITCH ASSEMBLY (EV SWITCH) Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (COMBINATION SWITCH ASSEMBLY - BODY GROUND)


    1. Disconnect connector E115 from the combination switch assembly.

    2. A003SDIE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Combination Switch Assembly)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E115-3 (E) - Body ground Always Below 1 Ω

    3. Connect the combination switch assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - COMBINATION SWITCH ASSEMBLY)


    1. Disconnect connector E111 from the power management control ECU.

    2. Disconnect connector E115 from the combination switch assembly.

    3. A003U9CE01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)
      *b

      Front view of wire harness connector

      (to Combination Switch Assembly)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E111-13 (EVSW) - E115-1 (S) Always Below 1 Ω
      E111-13 (EVSW) or E115-1 (S) - Body ground Always 10 kΩ or higher

    4. Connect the combination switch assembly connector.

    5. Connect the power management control ECU connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here